I know this is kind of a "random" topic for a thread. But you know how you might get some cases for your cards and you battle with them for a while and they lose there "smoothness" sooner or later. They become sticky and terrible for shuffling. I got some old blue UltraPro(TM) card cases and I want to know what you can do to them to make them more smooth like before. I don't want to go waste money for more. But do you wash them, rub them, etc? Or am I shuffling them wrong?